package com.shineoxygen.api;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang3.StringUtils;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.nodes.Node;
import org.jsoup.select.Elements;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.google.gson.JsonObject;
import com.saysth.commons.http.HttpHelper;
import com.shineoxygen.api.model.WeixinJingXuan;
import com.shineoxygen.common.base.controller.BaseController;

@Controller
@RequestMapping("/api/littleWechatApi")
public class LittleWechatApi extends BaseController {
	public static final String DEF_CHATSET = "UTF-8";
	public static final int DEF_CONN_TIMEOUT = 30000;
	public static final int DEF_READ_TIMEOUT = 30000;
	public static String userAgent = "Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.66 Safari/537.36";

	// 配置您申请的KEY
	public static final String APPKEY = "5f3e74eb758425487dcea52e087825ef";

	// 微信精选接口
	@RequestMapping(value = { "/weixin" }, method = { RequestMethod.GET }, produces = "text/json;charset=UTF-8")
	public @ResponseBody String weixin(HttpServletRequest req, HttpServletResponse res, String page, String pageSize) {

		String result = null;
		String url = "http://v.juhe.cn/weixin/query";// 请求接口地址
		Map params = new HashMap();// 请求参数
		params.put("pno", Integer.parseInt(page) + 1);// 当前页数，默认1
		params.put("ps", Integer.parseInt(pageSize));// 每页返回条数，最大100，默认20
		params.put("key", APPKEY);// 应用APPKEY(应用详细页查询)
		params.put("dtype", "");// 返回数据的格式,xml或json，默认json

		String json = "{}";
		try {
			result = net(url, params, "GET");
			JSONObject object = JSONObject.parseObject(result);
			if (object.getInteger("error_code") == 0) {
				return JSON.toJSONString(object.get("result"));
			} else {
				System.out.println(object.get("error_code") + ":" + object.get("reason"));
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		System.out.println(json);
		return null;
	}

	@RequestMapping(value = { "/singleArticle" }, method = { RequestMethod.GET }, produces = "text/json;charset=UTF-8")
	public @ResponseBody String singleArticle(HttpServletRequest req, HttpServletResponse res, String url) {
		if (StringUtils.isBlank(url)) {
			return "{}";
		}

		List<WeixinJingXuan> contents = findContents(url);
		if (contents.size() < 1) {
			WeixinJingXuan jingxuan = new WeixinJingXuan();
			jingxuan.setContent("文章不存在了...");
			jingxuan.setType("text");
			contents.add(jingxuan);
		}
		return JSON.toJSONString(contents);
	}

	private boolean isEnough(String url) {
		// List<WeixinJingXuan> contents = new ArrayList<>(0);
		// // url 获取 html
		// String e = null;
		// try {
		// e = HttpHelper.connect(url).timeout(30000).get().html();
		// } catch (Exception arg4) {
		// return false;
		// }
		// if (StringUtils.isBlank(e)) {
		// return false;
		// }
		// // 解析html，获取文章具体内容
		// Document doc = Jsoup.parse(e);
		// Elements elements = doc.select("#js_content>p");
		// if (elements.size() < 11) {
		// return false;
		// }
		// // for (int i = 0; i < elements.size(); i++) {
		// // if (i == elements.size() - 3) {
		// // break;
		// // }
		// // if (StringUtils.isNoneBlank(elements.get(i).text())) {
		// // WeixinJingXuan jingxuan = new WeixinJingXuan();
		// // jingxuan.setContent(elements.get(i).text());
		// // jingxuan.setType("text");
		// // contents.add(jingxuan);
		// // }
		// // if (elements.get(i).html().contains("<img")) {
		// // Elements imgs = elements.get(i).select("img");
		// // for (Element img : imgs) {
		// // WeixinJingXuan jingxuan = new WeixinJingXuan();
		// // jingxuan.setContent(img.attr("data-src"));
		// // jingxuan.setType("img");
		// // contents.add(jingxuan);
		// // }
		// // }
		// // if (contents.size() > 6) {
		// // return true;
		// // }
		// // }
		return true;
	}

	private List<WeixinJingXuan> findContents(String url) {
		List<WeixinJingXuan> contents = new ArrayList<>(0);
		// url 获取 html
		String e = null;
		try {
			e = HttpHelper.connect(url).timeout(30000).get().html();
		} catch (Exception arg4) {
			return contents;
		}
		if (StringUtils.isBlank(e)) {
			return contents;
		}

		// 解析html，获取文章具体内容
		Document doc = Jsoup.parse(e);
		Elements elements = doc.select("#js_content p,blockquote");
		for (int i = 0; i < elements.size(); i++) {
			if (i == elements.size() - 3) {
				break;
			}
			if (StringUtils.isNoneBlank(elements.get(i).text())) {
				WeixinJingXuan jingxuan = new WeixinJingXuan();
				jingxuan.setContent(elements.get(i).text());
				jingxuan.setType("text");
				contents.add(jingxuan);
			}
			if (elements.get(i).html().contains("<img")) {
				Elements imgs = elements.get(i).select("img");
				for (Element img : imgs) {
					WeixinJingXuan jingxuan = new WeixinJingXuan();
					jingxuan.setContent(img.attr("data-src"));
					jingxuan.setType("img");
					contents.add(jingxuan);
				}
			}
		}
		return contents;
	}

	/**
	 *
	 * @param strUrl
	 *            请求地址
	 * @param params
	 *            请求参数
	 * @param method
	 *            请求方法
	 * @return 网络请求字符串
	 * @throws Exception
	 */
	public static String net(String strUrl, Map params, String method) throws Exception {
		HttpURLConnection conn = null;
		BufferedReader reader = null;
		String rs = null;
		try {
			StringBuffer sb = new StringBuffer();
			if (method == null || method.equals("GET")) {
				strUrl = strUrl + "?" + urlencode(params);
			}
			URL url = new URL(strUrl);
			conn = (HttpURLConnection) url.openConnection();
			if (method == null || method.equals("GET")) {
				conn.setRequestMethod("GET");
			} else {
				conn.setRequestMethod("POST");
				conn.setDoOutput(true);
			}
			conn.setRequestProperty("User-agent", userAgent);
			conn.setUseCaches(false);
			conn.setConnectTimeout(DEF_CONN_TIMEOUT);
			conn.setReadTimeout(DEF_READ_TIMEOUT);
			conn.setInstanceFollowRedirects(false);
			conn.connect();
			if (params != null && method.equals("POST")) {
				try {
					DataOutputStream out = new DataOutputStream(conn.getOutputStream());
					out.writeBytes(urlencode(params));
				} catch (Exception e) {
					// TODO: handle exception
				}
			}
			InputStream is = conn.getInputStream();
			reader = new BufferedReader(new InputStreamReader(is, DEF_CHATSET));
			String strRead = null;
			while ((strRead = reader.readLine()) != null) {
				sb.append(strRead);
			}
			rs = sb.toString();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (reader != null) {
				reader.close();
			}
			if (conn != null) {
				conn.disconnect();
			}
		}
		return rs;
	}

	// 将map型转为请求参数型
	public static String urlencode(Map<String, Object> data) {
		StringBuilder sb = new StringBuilder();
		for (Map.Entry i : data.entrySet()) {
			try {
				sb.append(i.getKey()).append("=").append(URLEncoder.encode(i.getValue() + "", "UTF-8")).append("&");
			} catch (UnsupportedEncodingException e) {
				e.printStackTrace();
			}
		}
		return sb.toString();
	}

}
